Altitudinal distribution patterns of plant functional group biodiversity in Longhushan, Guangxi

The biodiversity of plant community and evergreen plant functional group as well as deciduous plant functional group is investigated by means of belt transect method along altitudinal gradient in the Longhushan in Guangxi. Altitudinal distribution pattern analysis shows that the α-biodiversity has no obvious change with elevation in the arborous layer, but there is obvious difference between evergreen plant functional group and deciduous plant functional group and little difference between evergreen plant functional group and biodiversity of plant community; the β-biodiversity altitudinal distribution pattern is similar among community and evergreen plant functional group as well as deciduous functional group. Plant species diversity altitudinal distribution pattern is resulted from comprehensive effect by environmental factors and different response of functional groups. The impact of landform and lithology on biodiversity is studied in the article. The results show that the α-biodiversity altitudinal gradient distribution pattern is in accordance with the landform, but does not change with lithology obviously; the β-biodiversity altitudinal gradient distribution pattern is in accordance with lithology, but does not change with the landform obviously.